Service difficulty report · Bear Strap · Boeing 7377H4

Difficulty date
May 2, 2022
Submitted
June 14, 2022
Operation
Air carrier
Aircraft
N286WN
Make and model
Boeing 7377H4
Aircraft serial
32471
Aircraft time
57,746 hours, 34,276 cycles
Part
Bear Strap
Condition
Cracked
Location
R1 Door
Stage of operation
IN
How discovered
9
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

CRACK FOUND AT R1 DOOR BEAR STRAP EMANATING FROM FASTENER OPPOSITE FITTING LATCH AT STA 294.5 BETWEEN STR-8R AND STR-9R. CRACK LENGTH : 0.968. / PERFORMED 0.040 IN. INSURANCE CUT AT R1-BEARSTRAP. REF.B737-7. SRM-53-10-01-2R-6. STEP 4-D(1).FABRICATED REPAIR DOUBLER FROM 2024T3 0.100' AND REPAIR TRIPLER FROM 2024T3 0.063' PER REF B737 SRM 53-10-01-2R-6 TABLE 201 AND FIG 202;TREATED AND PRIMED FABRICATED DOUBLER;TRIPLER AND FUSELAGE.<BR>AS PER REF. B737-7. SRM 53-10-01-2R-6. STEP 4-G4; INSTALLED COUNTERSINK REPAIRS WASHER IN THE INICIAL HOLES LOCATIONS. AS PER REFERENCE B737-7 SRM-53-10-01-2R-6. STEP4-L MIXED PRC BMS 5-95 ON 5/16/22 AT 18:00PM; SQUEEZE OUT TIME BY 5/20/22 AT 6:00AM. STARTED INSTALLATION DOUBLER AND TRIPLER ON APRIL 16/22. AT 19:00PM.FABRICATED REPAIR DOUBLER FROM 2024T3 0.100' AND REPAIR TRIPLER FROM 2024T3 0.063'; TAPERED FILLER; FLAT FILLER AND BEAR STRAP FILLER. PER REF B737 SRM 53-10-01-2R-6 TABLE 201 AND FIG 202; TREATED AND PRIMED FABRICATED FLAT FILLER; TAPERED FILLER AND BEAR STRAP FILLER PER REF B737 SRM 53-10-01-2R-6. STEP 4-G4.COMPLETED INSTALLATION OF ALL REPAIR PARTS; DOUBLER; TRIPPLER; FLAT FILLER; TAPERED FILLER AND BEAR STRAP FILLER PER REF B737 SRM 51-40-02-0G-0 AND SRM 53-10-01-2R-6 FIG 202; PAINTED R1 DOOR BEAR STRAP REPAIR AREA PER AMM 51-21-73-370-803.;ACCOMPLISHED PERMANENT REPAIRED AT R1 DOOR BEAR STRAP AT BS 294.5 BETWEEN STR-8R AND STR-9R AS PER EA 22-153-01324.

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